Where is Anode Rod on A.O Smith Water Heater?

The anode rod  in your A.O. Smith brand water heater is located on top of your tank. When you are facing the front of your water heater, the sacrificial magnesium or aluminum anode is located at the back, between the cold and hot water connections. Refer to your water heater’s user guide for more information.


  1. Avatar Rick Manning on October 6, 2020 at 5:35 pm

    Where is the anode rod on a AOSmith Proline ent 30-100 electric water heater ?

    • Avatar Corro-Protec on October 7, 2020 at 9:32 am

      Yes, you can install our powered anode rod on this AOSmith water heater.

  2. Avatar Christian G Brown on November 20, 2020 at 7:14 pm

    My AO Smith water heater has 2 anode rods. I bought a powered rod from you guys and noticed this during the install. Do I need to remove the other anode rod?

    • Avatar Corro-Protec on November 21, 2020 at 10:00 am

      Hello Christian, you don’t need to remove the second anode rod.

  3. Avatar Matt on April 24, 2021 at 7:10 pm

    I don’t see the anode on top of my hybrid AO Smith water heater. Do I need to remove the top to access it?

    • Avatar Corro-Protec on May 5, 2021 at 7:05 am

      This is possible; some models show that the anode is located under the top of the tank. You can also refer to the owner manual to easily find it.

  4. Avatar jeff on July 23, 2021 at 8:17 am

    Can I remove the anode rod if it keeps smelling like rotten eggs after a while

    • Avatar Corro-Protec on August 2, 2021 at 8:47 am

      Jeff, removing the magnesium anode rod will reduce the life of your tank since it’s the only protection you have against corrosion. We suggest replacing the anode with a Corro-Protec powered anode rod.

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